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14 Cards in this Set
- Front
- Back
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what are opportunistic pathogens
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pathogens that cause infection if host defenses impaired
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pathogens can cause disease in individuals with normal host defenses true or false?
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true
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commensals are...
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microflora found on the body exposed to normal environment
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symbiosis is...
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close interactions between organism , if one gains , microorganism may be harmful to host
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name the 3 types of symbiosis and describe them...
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mutalism: both organisms benefit, get a place to live and nutrients.
Parasitism: harmful symbiont gains Commensalism: neither harm or benefitknown as commensals |
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beneficial effects of microflora
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colonization resistance. competition space and nutrients. release bacteriocins. aid digestive process. stimulate immune system. influence on tissue development.
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bad effects of microflora
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BO, streptococcal (dental infections), ACNE, ulcers, cancer- conversion compounds make things toxic
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formation of new microflora from..
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foetus, newborn, envirronmental accqusition, contact with other.
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formation of normal microflora in ..
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large intestine in anaerobic environment, colonization
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microbial pathogenesis consists of ...
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disease, pathogen, virulence, infection, microbial intoxication
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what is KOCHs
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link between microb and diseas. microb found in all disease cases, isolated in culture and tested for experimental infection
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describe the features of vertical transmission
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persistence of agent. parent to offspring, neoatal infection HIV, bacterial, fungal, protozayal diseases.
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describe horizontal disease transmission
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inhalation of droplets, fecal or oral, sex or blood exchange
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changes in microflora
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colonization in gut and VRT in hospitals and MRSA, changes in physiological development and gut flora
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